The d- and f- Block Elements Test

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The d- and f- Block Elements Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Which one of the following is used in block making for etching Cu and Ag ?

A
FeCl₃

B
Mohr salt

C
FeSO₄

D
FeS
Question 2
1 / -0

Which is the chief ore of copper?

A
Galena

B
Copper pyrites

C
Sphalerite

D
Siderite
Question 3
1 / -0

Which dose not belong to first transition series ?

A
Fe

B
V

C
Ag

D
Cu .
Question 4
1 / -0

Which one has highest melting point ?

A
Re

B
Ti

C
W

D
Ta
Question 5
1 / -0

The elements of which set have same size ?

A
Nb and Ta

B
Zr and Hf

C
Mo and W

D
Each set
Question 6
1 / -0

The spin only magnetic moment of Fe₂+ ion (in BM) is approximately

A
4

B
7

C
5

D
6
Question 7
1 / -0

Sodium thiosulphate is used in photography because of its

A
Oxidising nature

B
Reducing nature

C
Complexing nature

D
Photochemical nature .
Question 8
1 / -0

If KMnO₄ is reduced by oxalic acid in the acidic medium , then oxidation number of Mn changes from :

A
+ 4 to + 2

B
+ 6 to + 4

C
+ 7 to + 2

D
+ 7 to + 4 .
Question 9
1 / -0

What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?

A
Cr₃+ and Cr₂ O72-

B
Cr₂ O72- and H2O are formed

C
Cr₂ O42- is reduced to +7 state of Cr

D
Cr₂ O42- is reduced to +3 state of Cr
Question 10
1 / -0

Which orbital is progressively filled in actinides ?

A
4f

B
5f

C
6d

D
7s

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Re-Attempt Weekly Quiz Competition

The d- and f- Block Elements Test - 2

Result

The d- and f- Block Elements Test - 2

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SHARING IS CARING

Question 1

FeCl3

Mohr salt

FeSO4

FeS

Question 2

Galena

Copper pyrites

Sphalerite

Siderite

Question 3

Fe

V

Ag

Cu .

Question 4

Re

Ti

W

Ta

Question 5

Nb and Ta

Zr and Hf

Mo and W

Each set

Question 6

4

7

5

6

Question 7

Oxidising nature

Reducing nature

Complexing nature

Photochemical nature .

Question 8

+ 4 to + 2

+ 6 to + 4

+ 7 to + 2

+ 7 to + 4 .

Question 9

Cr3+ and Cr2 O72-

​​​​​Cr2 O72- and H2O are formed

Cr2 O42- is reduced to +7 state of Cr

Cr2 O42- is reduced to +3 state of Cr

Question 10

4f

5f

6d

7s

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FeCl₃

FeSO₄

Cr₃+ and Cr₂ O72-

Cr₂ O72- and H2O are formed

Cr₂ O42- is reduced to +7 state of Cr

Cr₂ O42- is reduced to +3 state of Cr